What is your least favorite Sony system?

[SvennoJ]

PSP. Wtf was I thinking, I like to game on a 92" screen, not a 4.3" screen.
I used it on the plane a couple of times when I was still traveling, but staring at a screen only makes my headache worse. Locoroco was fun though. Ps3 version on the wall was better, one of those rare sixaxis games.